The Ivankovskoye Reservoir also known as the Moscow sea — this first reservoir in Volga River headwaters. Width of a reservoir makes 2-5 km, length about 120 km. It is kept by a dam 14 meters high. In 1937 it was flooded with water the territory which was occupied by 106 settlements, extensive meadows and bogs, big areas of cut woods was flooded. Under water there was an area of 32 000 hectares. The Ivankovskoye Reservoir Moscow Canal delivers fresh water to Moscow and flood the Moskva River. The Ivankovsky hydroelectric power station works at a drain of a reservoir. It is possible to bathe and catch fish In the Moscow sea. There are about 300 islands in the water area of a reservoir. It is possible to go on the sailing yacht and to do many other water sports and rest here.